48 NATURAL HISTORY AND TOPOGRAPHY OF GROTON, MASS. 



Cow Pond — sometimes called Whitney's Pond, in the east- 

 erly part of the town, covering an area of 71 acres. Cow 

 Pond Meadow is mentioned in the record of Ralph Reed's 

 land before the year 1664. 



Outlet: Cow Pond Brook, which flows into Massapoag 

 Pond. 



Duck Pond — near the Ridges, east of Knop's Pond, and 

 separated from it by a ridge only — lies perhaps half a mile 

 south of Cow Pond. It covers 55 acres, and has no outlet. 



Flat Pond — a small sheet of water near the Throne, in 

 the west part of the town. 



Outlet: a small unnamed brook into the Squannacook 

 River. 



Forge Pond — in Westford, covering an area of 143 acres. 

 In very early times it was called Stony Brook Pond. 



Outlet : Stony Brook, which empties into the Merrimack 

 River at North Chelmsford. 



Half-Moon Pond — a small pond in the upper part of the 

 meadow, which lies south of the Hillside Road. 



Knop's Pond — near the Ridges, west of Duck Pond, and 

 is of the same size as that pond, covering 55 acres. So called 

 from James Knapp, or Knop, an early settler who owned land 

 in the neighborhood. 



Outlet: a brook into Cow Pond. 



Long Pond — lies on the southern border of the town, 

 partly in Groton, but mostly in Ayer, covering 45 acres. 

 Outlet: a brook into Sandy Pond. 



Martin's Pond — near the foot of Gibbet Hill, on its 

 northerly side — covers 167^ acres; it was named after 

 William Martin, an early settler. Before coming to Groton, 

 Martin had lived in what is now North Reading, where an- 

 other pond was named for him. 



